If someone didn't attend meetings regularly for whatever reason, then yes I think you could consider them "on the fence" spiritually and in need of encouragement.
If someone attended a meeting with a beard all these years faithfully, then you could assume that they were indeed spiritually secure in their relationship with Jehovah.
Remember, there was never a "no beard" rule. But it was taboo, and because it was taboo those sporting one were not considered "exemplary" which held them back from reaching out for privileges. Not every brother is interested in such privileges, and were happy to attend meetings and go out in the ministry with their beard. The beard alone was never a reflection of their spirituality - which is the point that the GB Update addressed.
Now, on the other hand, if someone was weak to begin with, then the beard issue was a stumbling block. A young newly baptized brother became inactive right after his baptism. Me and another brother would visit him regularly to try and encourage him. When we FINALLY got him to come to a meeting, after the program Brother Anti-Beard Elder goes over to him, mentions his facial hair, and tells him he should know better. We hadn't seen this brother in months, and after that, we never saw him again.
The same Elder had a student that was somewhat progressive and had attended a few meetings. The student comes to me at one meeting and asks me about why nobody has facial hair, because his teacher pointed at his mustache/goatee after one study session and said to him "You know, the day is coming when you're going to have to shave that thing off your face". I tried to explain that he can sport his facial hair all he wants, that it's just this brothers strong opinion and we occasionally have a bearded brother and neighboring congregations have bearded brothers, but alas, this was around the last time we ever saw this student attend a meeting.
^ Those are just 2 of many examples I have see with my own eyes and heard with my own ears how the taboo surrounding facial hair can be a stumbling block to those who are weak. Personally, I would have kept my mouth shut about facial hair and let the student draw his own conclusions, because I don't feel like being fitted for a millstone around my neck, lol. But the GB Update to settle the issue of beards being allowed even for appointed men was necessary, because in this day and age it would be easy to hear "JW's can't have beards" (which was NEVER true) and conclude we don't have the truth, because you can read the exact opposite in the scriptures.